The idea of adding a 'locator' is so that we can add a query string to the request URL and this can contain additional information to call out to a locator to find either the referenced MBeanServer or MBeanServerConnection.

The Remoting JMX side of the implementation is just to add the locator API and to make use of it including the addition of support for query string.

One place to consider using this is within AS7 where a connection will be made to the master domain controller and the query string will identify a process to manage - the locator will then either return the MBeanServer or MBeanServerConnection - the end result will be that the master process becomes a proxy to the other processes providing a shared entry point and shared connections to other processes to be managed.